---
title: "Server-side tools"
description: "Learn how to call tools in the server-side from the AI Agent extension."
canonical_url: "https://tiptap.dev/docs/content-ai/capabilities/agent/custom-llms/server-side-tools"
---

# Server-side tools

Learn how to call tools in the server-side from the AI Agent extension.

Server-side tools are tools that run on the server. Use them to interact with external data sources. For example:

- Search the web for information
- Query a database
- Call an external API

The guide has different versions depending on the AI library you use.

- [Vercel AI SDK](https://tiptap.dev/docs/content-ai/capabilities/agent/custom-llms/server-side-tools/vercel-ai-sdk.md)
- [OpenAI Chat Completions API](https://tiptap.dev/docs/content-ai/capabilities/agent/custom-llms/server-side-tools/openai-chat-completions.md)
- [OpenAI Responses API](https://tiptap.dev/docs/content-ai/capabilities/agent/custom-llms/server-side-tools/openai-responses.md)
- [Anthropic Claude Messages API](https://tiptap.dev/docs/content-ai/capabilities/agent/custom-llms/server-side-tools/anthropic-messages.md)